Coherent light generators – Particular active media – Insulating crystal
Patent
1992-04-15
1993-11-30
Scott, Jr., Leon
Coherent light generators
Particular active media
Insulating crystal
372 69, H01S 316
Patent
active
052672549
ABSTRACT:
A color center laser is provided with a crystal disposed within a longitudinally pumped cavity. Optics are provided to transversely excite the crystal. Both a circular lens and a cylindrical lens focus an auxiliary beam into the crystal of the color center laser to produce (F.sub.2.sup.+).sub.A color centers for lasing. The cylindrical lens is used to focus the auxiliary beam to a narrow focal line. The circular lens is used to adjust the length of the focal line. By adjusting the length of the focal line, an entirety of the pump beam is used for excitation. The lenses thus collimate and focus the focal line to a length within an active volume in the crystal of the color center laser essentially equal to a length of the crystal.
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Afzal Robert S.
Schneider Irwin
Jameson George
Jr. Leon Scott
McDonnell Thomas E.
The United States of America as represented by the Secretary of
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